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Optical and UV Observations of the Intermediate Polar 3A0729+103. Modulation with the Orbital Period

Published online by Cambridge University Press:  12 April 2016

R. Falomo ,
J.M. Bonnet-Bidaud ,
P.A. Charles ,
L. Maraschi ,
M. Mouchet ,
K. Mukai ,
E.G. Tanzi  and
A. Treves
R. Falomo
Affiliation:
Osservatorio di Padova, Italy
J.M. Bonnet-Bidaud
Affiliation:
CEN Saclay, France
P.A. Charles
Affiliation:
University of Oxford, UK
L. Maraschi
Affiliation:
Dipartimento di Fisica dell’Universita’, Milano, Italy
M. Mouchet
Affiliation:
CEN Saclay, France
K. Mukai
Affiliation:
University of Oxford, UK
E.G. Tanzi
Affiliation:
Istituto di Fisica Cosmica del CNR, Milano, Italy
A. Treves
Affiliation:
Dipartimento di Fisica dell’Universita’, Milano, Italy

Abstract

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3A0729+103 (= BG CMi) is an intermediate polar discovered through its X-ray emission (McHardy et al. 1981, 1984). The orbital period is 3.235 hours and the rotation period is 15.2 minutes, For ephemeris and references on the source we refer to McHardy et al. (1984). We report here on optical (4025 to 5090 A) and ultraviolet (1200 to 3200 A) spectroscopy obtained, respectively, on Dec 1, 1984 and April 21, 1985. Our data show clear modulation of spectral features with the orbital period.

Type
VI. Magnetic Cataclysmic Systems
Information
International Astronomical Union Colloquium , Volume 93: Cataclysmic Variables: Recent Multi-Frequency Observations and Theoretical Developments , 1987 , pp. 631 - 635
Copyright
Copyright © Reidel 1987

References

Falomo, R., Charles, P.A., Corbet, R., Haraschi, L., Tagliaferri, G., Tanzi, E.G., and Treves, A. 1985, in “Recent Results on Cataclysmic Variables, ESA SP-236, p. 239.Google Scholar
McHardy, I.M. Pye, J.P., Fairall, A.P., Warner, B., Cropper, M., and Allen, S. 1984, M.N.R.A.S., 210, 663.Google Scholar
McHardy, I.M., Lawrence, A., Pye, J.P., and Pounds, K.A. 1981, M.N.R.A.S., 197, 893 Google Scholar
Penning, R.W. 1985, Ap. J., 289, 300.Google Scholar
Penning, R.W., Schmidt, G.D., and Liebert, J. 1986, Ap. J., 301, 881.Google Scholar